Târgșoru Vechi is a commune in Prahova County, Muntenia, Romania.

It is composed of four villages: Stăncești, Strejnicu (commune seat), Târgșoru Vechi, and Zahanaua.

There is an aerodrome for general aviation in Strejnicu, mostly used by Aeroclubul României [ro].

Strejnicu village is the assassination site of historian and politician Nicolae Iorga, who was killed on November 27, 1940 by an Iron Guard squad.

This Prahova County location article is a stub.